Printer Board Pcb - Kyocera KM-1650 Service Manual

2DA/2DB-1
2-3-4

Printer board PCB

FSDM,
YC4
FSDP
DATA+,
DATA-
HSDM,
HSDP
USB2.0
PHY
Q2
Q3
Digital
transistor
USBINT
USBVBUS
YC5
TXOP, TXON
U26
Ether
PHY
RXIP, RXIN
Digital
transistor
LEDN
YC3
Q4
PNSELIN
U24
PNSTROBE,
PNAUTOFD, PNINIT
PNACK, PBUSY,
PPERROR
PSELECT, PFAULT
PPDATA7-0
YC11
RTS, DTR, TXD
CTS, DSR, RXD
RSSEL
YC8
C2PBDN, C2PSDIR, C2PSBSY
C2PEGSI, C2PSCKN
C2PVIDEO_PRT_P, C2PVIDEO_PRT_N
C2PRST_PRTN
C2PW_UP_PRTN
X'tal (System)
YC6 25.0000 MHz
E2COVSYNC, E2CPVSYNC, E2CSCLKN
E2CEGSI, E2CRSTN, E2CPLGCLK
E2CSDIR, E2CSBSY,
E2CEGSO, E2CEGIRN
E2COUTPEN
YC7
3.3V-1.8V regulator
+3.3V
+1.8V
U34
2-3-14
VALIDH
USBCLK, LINESTATE0-1,
TXREADY, RXERROR,
RXVALID, RXACTIVE
U25
USBRST, SUSPENDM,
TERMSELECT, XCVRSELECT,
TXVALID
USBD15-0
XIN
X'tal (USB)
XOUT X3
48.0 MHz
TX_CLK, RX_ER, RX_CLK,
RX_DV, COL, CRS, PHY_IRN
TX_EN, MDC
MDIO
TX_D3-0
RX_D3-0
RSTOUTN
XIN
X'tal (Ether)
X4
XOUT
25.0 MHz
NSELIN
NSTROBE,
NAUTOFD, NINIT
NACK,BUSY,
PERROR
SELECT, FAULT
PDATA7-0
P1284DIR
U5
SSCG
X1
VXIN
X2 VXOUT
X'tal (Video)
Buffer
19.858061 MHz
U27
3.3V-2.5V regulator
+3.3V +2.5V
U33
+3.3V regulator circuit
+5VCONV +3.3 V
U32
Figure 2-3-7 Printer board PCB block diagram
CPUD31-0
CPUA31-0
U7, U9, U11
LA22-2
Buffer
CDET1A, CDET2A, CFWAITN1
CFCS1LN, CFCS1HN,
CFOEN1, CFWEN1, CFRST1
LA20,11-2
LA22-2
CDET2A, CDET2B, CFWAITN2
CFCS2LN,CFCS2HN, CFOEN2, CFWEN2, CFRST2
LA22-5
ROMA4-2
CSN0-1, FCLE, FALE, OEN0, WEN0, NANDCSN, RSTOUTN
FRB
U3
ASIC
ROMA1
CSN2, OEN1
LA22-2
ROMA1
OEN1
CNS3
Decoder
LA22
U15
LA20-2
OPRSTN1
KUIOCSN1, OPRDY1,
DMAACK1N,IOR1N, IOW1N
IODTACKN1, OPIR1N, DMAREQ1
LA16-2
SDCLK1-2
DQMN3, DQMN2
DQMN1, DQMN0
SDRASN, SDCASN, SDWEN, SDBA1, SDBA0, SDCLKE
IICSCL
IICSDA
SDCSN2-3
SDRAM address bus
SDA12-0
SDA12-0
SDCLK0
SDRAM
SDCSN0
SDRAM
SDA12-0
SDRAM data bus
U6, U8, U10, U12
Local data bus
buffer
CPUA31-0
U1
PPC750CXr
RSTOUTN
YC2
Option
memory
card
slot
Buffer CFA20,11-2
U22,U23
YC1
LA20,11-2
Option
hard
disk
slot
System
(Code ROM)
U13
Font
mask
ROM
API ROM
socket
YC12
Option I/f
KUIO-LV (3.3 V)
SDD31-16
U18
U19
SDD15-0
SDD31-0 SDD31-0
LD31-0
U20, U21
LD15-0
CFD15-0
LD15-0
YS1
LD31-0
DIMM
slot
LD15-0
U14
LD15-0
LD15-0
Option
SDRAM
DIMM
socket
SDD31-0
YS2